Indexed

Indexed provides a private-company intelligence platform offering searchable data on companies, investors, and funding rounds. Users can look up companies by name or domain, explore detailed funding histories, investor relationships, and export data via a REST API. The service includes tiered pricing with free credits and paid plans for higher usage, API keys for authentication, and features such as bulk enrichment, webhooks, and scheduled exports.

Indexed publishes 8 API contracts indexed on the APIs.io network, including Companies API, Enrich API, Industries API, and 5 more. Tagged areas include Company, Data, Private Company, and Funding.

The Indexed catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Indexed’s developer surface includes authentication, documentation, pricing, support, and 22 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

47.1/100 developing ▬ flat Agent 29/100 agent ready Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract 1 Agent Skills

Company Data Private Company Funding

What this lets a business do 2

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Data & Reference Information Services

AE-230

CompaniesEnrichInvestors

GET /companies POST /companies/lookup POST /enrich GET /investors

Developer Platform & API Ecosystem Management

BC-4270

UsageWebhooks

GET /webhooks POST /webhooks GET /webhooks/{id} POST /webhooks/{id}/test

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 47.1/100 · developing

Contract Quality 13.7 / 19

Developer Ergonomics 4.2 / 15

Access Clarity 10.8 / 15

Operational Transparency 0.0 / 10

Contract Governance 2.0 / 9

Discoverability 4.8 / 8

Regulatory Posture 2.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/indexed-vc/"><img src="https://apis.io/badge/indexed-vc/card.svg" alt="Indexed on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Developer Ergonomics scores 28.0 — up to +14.4 composite points Ask about this →
Operational Transparency scores 0.0 — up to +13.0 composite points Ask about this →
Contract Governance scores 22.0 — up to +9.4 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/indexed-vc/apis.yml: open an issue on github.com/api-evangelist/indexed-vc to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 8

Individual APIs this provider publishes, each with its own machine-readable definition.

Indexed Companies API

The Companies API from Indexed — 3 operation(s) for companies.

Indexed Enrich API

The Enrich API from Indexed — 1 operation(s) for enrich.

Indexed Industries API

The Industries API from Indexed — 1 operation(s) for industries.

Indexed Investors API

The Investors API from Indexed — 2 operation(s) for investors.

Indexed Reveal API

The Reveal API from Indexed — 1 operation(s) for reveal.

Indexed Scheduled Exports API

The Scheduled Exports API from Indexed — 2 operation(s) for scheduled exports.

Indexed Usage API

The Usage API from Indexed — 1 operation(s) for usage.

Indexed Webhooks API

The Webhooks API from Indexed — 4 operation(s) for webhooks.

Scroll for all 8

Agent Skills 1

Packaged agent skills for driving this provider's APIs from an AI assistant.

indexed-vc-search-and-retrieve-company

AGENT SKILL

Indexed API pricing

Prices published by Indexed, read 2026-10-02 from indexed.vc/pricing. A free plan or tier is listed.

Plan	Price
Free	Free
Silver	$49/mo
Gold	$149/mo
Platinum	$499/mo
Enterprise	Contact sales

Plan details, limits and sources →

Billed by: seat · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Indexed Plans Pricing

5 plans

PLANS

Indexed Price Estimates

0 plans

PLANS

Terms of Service 1

What its API terms permit and prohibit, quoted from its own page.

Indexed

14 quoted statements, read from Indexed's own page on 2026-11-09.

TERMS

Privacy & Data 1

Its role, the data it processes, retention and transfers, quoted from its own privacy page.

Indexed

23 quoted statements, read from Indexed's own page on 2026-11-09.

PRIVACY

Eligibility 1

Who may sign up and where, quoted from its own terms.

Indexed

1 quoted statement, read from Indexed's own page on 2026-11-09.

ELIGIBILITY

AI Preferences 1

Its stance on AI training, inference and agents, quoted from its own pages.

Indexed

1 quoted statement, read from Indexed's own page on 2026-11-09.

AI PREFS

Data License 1

How its data and outputs may be reused, quoted from its own terms.

Indexed

2 quoted statements, read from Indexed's own page on 2026-11-09.

LICENSE

FinOps 1

Cost, billing, and metering signals for API financial operations.

Indexed Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Indexed Vc Context

14 classes · 93 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

Indexed API Rules

14 rules · 10 error-severity 1 warn-severity 3 info-severity

SPECTRAL

JSON Schema 7

Standalone JSON Schema definitions for this provider's data models.

CompanyCard

14 properties

JSON SCHEMA

CompanyDomainLookupItem

0 properties

JSON SCHEMA

CompanyProfile

23 properties

JSON SCHEMA

IndustryFilter

3 properties

JSON SCHEMA

InvestorProfile

19 properties

JSON SCHEMA

SearchPageMeta

13 properties

JSON SCHEMA

UsageData

12 properties

JSON SCHEMA

Scroll for all 7

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Indexed Authentication

apiKey · 1 scheme

SECURITY

Indexed Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

Indexed Agentic Access

19 operations · 8 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

AIPreferences

AIPreferences

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Spectral

JSONLD

Vocabulary

DataModel

ErrorCatalog

Conformance

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 6

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

UsageTerms

DataLicense

Company 1

The organization behind the API

Website

Website

Other 5

Properties that don't map to a standard resource type

CapabilityMap

Hosts

Vendors

DataProcessing

Eligibility

Source (apis.yml)

aid: indexed-vc
name: Indexed
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
image: https://indexed.vc/opengraph-image?2ed8c04617ed383e
description: Indexed provides a private-company intelligence platform offering searchable data on companies, investors, and
  funding rounds. Users can look up companies by name or domain, explore detailed funding histories, investor relationships,
  and export data via a REST API. The service includes tiered pricing with free credits and paid plans for higher usage, API
  keys for authentication, and features such as bulk enrichment, webhooks, and scheduled exports.
url: https://raw.githubusercontent.com/api-evangelist/indexed-vc/refs/heads/main/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-02 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-02'
modified: '2026-10-02'
tags:
- Company
- Data
- Private Company
- Funding
tags_raw:
- Company
- Data
- Private-Company
- Funding
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: CapabilityMap
  url: capabilities/indexed-vc-capability-edges.yml
  name: Indexed Business Capability Map
- type: AgenticAccess
  url: agentic-access/indexed-vc-agentic-access.yml
- type: Plans
  url: plans/indexed-vc-plans-pricing.yml
- type: Spectral
  url: rules/indexed-vc-rules.yml
- type: JSONLD
  url: json-ld/indexed-vc-context.jsonld
- type: Vocabulary
  url: vocabulary/indexed-vc-vocabulary.yml
- type: AgentSkill
  url: skills/_index.yml
- type: DataModel
  url: data-model/indexed-vc-data-model.yml
- type: ErrorCatalog
  url: errors/indexed-vc-problem-types.yml
- type: Conformance
  url: conformance/indexed-vc-conformance.yml
- type: LLMsTxt
  url: llms/indexed-vc-llms.txt
- type: Hosts
  url: hosts/indexed-vc-hosts.yml
- type: Vendors
  url: vendors/indexed-vc-vendors.yml
- type: Authentication
  url: authentication/indexed-vc-authentication.yml
- type: DomainSecurity
  url: security/indexed-vc-domain-security.yml
- type: Website
  url: https://indexed.vc
- type: Documentation
  url: https://indexed.vc/docs/api
- type: Pricing
  url: https://indexed.vc/pricing
- type: TermsOfService
  url: https://indexed.vc/terms
- type: PrivacyPolicy
  url: https://indexed.vc/privacy
- type: Support
  url: https://indexed.vc/contact
- type: UsageTerms
  url: terms/indexed-vc-terms-of-service.yml
- type: DataProcessing
  url: privacy/indexed-vc-privacy-policy.yml
- type: Eligibility
  url: eligibility/indexed-vc-eligibility.yml
- type: AIPreferences
  url: ai-preferences/indexed-vc-ai-preferences.yml
- type: DataLicense
  url: data-license/indexed-vc-data-license.yml
apis:
- aid: indexed-vc:indexed-vc-companies-api
  name: Indexed Companies API
  description: The Companies API from Indexed — 3 operation(s) for companies.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Companies
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-companies-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-company-profile-schema.json
  - type: JSONSchema
    url: json-schema/indexed-vc-search-page-meta-schema.json
  - type: JSONSchema
    url: json-schema/indexed-vc-company-domain-lookup-item-schema.json
  - type: JSONSchema
    url: json-schema/indexed-vc-company-card-schema.json
- aid: indexed-vc:indexed-vc-enrich-api
  name: Indexed Enrich API
  description: The Enrich API from Indexed — 1 operation(s) for enrich.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Enrich
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-enrich-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-company-profile-schema.json
- aid: indexed-vc:indexed-vc-industries-api
  name: Indexed Industries API
  description: The Industries API from Indexed — 1 operation(s) for industries.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Industries
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-industries-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-industry-filter-schema.json
- aid: indexed-vc:indexed-vc-investors-api
  name: Indexed Investors API
  description: The Investors API from Indexed — 2 operation(s) for investors.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Investor
  tags_raw:
  - Investors
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-investors-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-search-page-meta-schema.json
  - type: JSONSchema
    url: json-schema/indexed-vc-investor-profile-schema.json
- aid: indexed-vc:indexed-vc-reveal-api
  name: Indexed Reveal API
  description: The Reveal API from Indexed — 1 operation(s) for reveal.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Reveal
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-reveal-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-company-profile-schema.json
  - type: JSONSchema
    url: json-schema/indexed-vc-investor-profile-schema.json
- aid: indexed-vc:indexed-vc-scheduled-exports-api
  name: Indexed Scheduled Exports API
  description: The Scheduled Exports API from Indexed — 2 operation(s) for scheduled exports.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Scheduled Exports
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-scheduled-exports-api-openapi.yml
- aid: indexed-vc:indexed-vc-usage-api
  name: Indexed Usage API
  description: The Usage API from Indexed — 1 operation(s) for usage.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Usage
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-usage-api-openapi.yml
  - type: JSONSchema
    url: json-schema/indexed-vc-usage-data-schema.json
- aid: indexed-vc:indexed-vc-webhooks-api
  name: Indexed Webhooks API
  description: The Webhooks API from Indexed — 4 operation(s) for webhooks.
  humanURL: https://indexed.vc/docs/api
  baseURL: https://indexed.vc/api/v1
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/indexed-vc-webhooks-api-openapi.yml
x-submission-notes: 'Private-company data API: lookup by name/domain with funding rounds and investors.'
x-submission-probe: root 200; docs 200; OpenAPI 3.1.0 15 paths server indexed.vc/api/v1; llms.txt 200; 404 probe 429 (Vercel
  checkpoint)
x-enrichment:
  date: '2026-10-02'
  status: enriched
  artifacts_added: 19
  pass: modular-v1
  engine: identity=local,contract=local,surfaces=local,docs=local,regulatory=local

Indexed API — frequently asked questions

Does Indexed have an API?

Yes. APIs.io lists 8 APIs from Indexed, including Indexed Companies API, Indexed Enrich API and Indexed Industries API, and 5 more.

Is there an OpenAPI specification for the Indexed API?

Yes. APIs.io indexes 8 OpenAPI specifications for Indexed, each linked for download from this page.

How do I authenticate with the Indexed API?

Indexed uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Indexed Authentication.

How much does the Indexed API cost?

Indexed publishes its prices; its Silver plan is $49/mo as of 2026-10-02. APIs.io lists 5 pricing plans for Indexed, with each plan's price, limits and inclusions under Pricing on this page.

Is the Indexed API ready for AI agents?

Indexed has a Kin Score of 47.1 out of 100 (developing) and an Agent Readiness score of 28.7 (agent-ready), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/indexed-vc"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/indexed-vc/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/indexed-vc/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.